How to use

countOfMode

method

in

jsr166y.LinkedTransferQueue

/**
 * Returns the number of elements in this queue.  If this queue
 * contains more than {@code Integer.MAX_VALUE} elements, returns
 * {@code Integer.MAX_VALUE}.
 *
 * <p>Beware that, unlike in most collections, this method is
 * <em>NOT</em> a constant-time operation. Because of the
 * asynchronous nature of these queues, determining the current
 * number of elements requires an O(n) traversal.
 *
 * @return the number of elements in this queue
 */
public int size() {
  return countOfMode(true);
}

public int getWaitingConsumerCount() {
  return countOfMode(false);
}

public int getWaitingConsumerCount() {
  return countOfMode(false);
}

/**
 * Returns the number of elements in this queue.  If this queue
 * contains more than {@code Integer.MAX_VALUE} elements, returns
 * {@code Integer.MAX_VALUE}.
 *
 * <p>Beware that, unlike in most collections, this method is
 * <em>NOT</em> a constant-time operation. Because of the
 * asynchronous nature of these queues, determining the current
 * number of elements requires an O(n) traversal.
 *
 * @return the number of elements in this queue
 */
public int size() {
  return countOfMode(true);
}